Charles Ellicott Commentary Acts 4:3

"And they laid hands on them, and put them in ward unto the morrow: for it was now eventide." — Acts 4:3 (ASV)

It was now eventide.—The narrative started, it will be remembered, from 3 P.M. (Acts 3:1). The “eventide” began at 6 P.M.

Put them in hold.—Literally, in custody. In Acts 5:18, the word is translated “prison.” The old noun survives in our modern word “strong-hold.”